Make ActiveTabPermissionManager also grant the tabs permission.

chrome/test/data/extensions/api_test/active_tab/background.js

+// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+var theOnlyTestDone = null;
+
+function inject(callback) {
+  chrome.tabs.executeScript({ code: "true" }, callback);
+}
+
+chrome.browserAction.onClicked.addListener(function() {
+  inject(function() {
+    chrome.test.assertNoLastError();
+    chrome.test.notifyPass();
+  });
+});
+
+chrome.webNavigation.onCompleted.addListener(function(details) {
+  inject(function() {
+    chrome.test.assertLastError("Access to extension API denied.");
+    if (details.url.indexOf("final_page") >= 0)
+      theOnlyTestDone();
+    else
+      chrome.test.notifyPass();
+  });
+});
+
+chrome.test.runTests([
+  function theOnlyTest() {
+    // This will keep the test alive until the final callback is run.
+    theOnlyTestDone = chrome.test.callbackAdded();
+  }
+]);